GNU bug report logs - #56682
Fix the long lines font locking related slowdowns

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Package: emacs;

Reported by: Gregory Heytings <gregory <at> heytings.org>

Date: Thu, 21 Jul 2022 18:01:01 UTC

Severity: normal

Done: Gregory Heytings <gregory <at> heytings.org>

Bug is archived. No further changes may be made.

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Gregory Heytings <gregory <at> heytings.org>, Eli Zaretskii <eliz <at> gnu.org>
Cc: 56682 <at> debbugs.gnu.org, monnier <at> iro.umontreal.ca
Subject: bug#56682: Fix the long lines font locking related slowdowns
Date: Wed, 3 Aug 2022 03:26:02 +0300

On 03.08.2022 03:00, Dmitry Gutov wrote:
> On 02.08.2022 19:19, Gregory Heytings wrote:
>>
>>>> Try to open the dictionary.json with Emacs on master a month ago.
>>>
>>> I believe it can also be done with the current master, just after 
>>> setting long-line-threshold to the nil value.  Right?
>>>
>>
>> Indeed.  With master from one month ago it's even more crystal-clear 
>> that you see the statu quo ante.
> 
> If I set long-line-threshold to nil, does that also disable the 
> redisplay optimizations related to long lines?
> 
> Ones that caused scrolling delays even after the buffer has been fully 
> fontified.

I mean those that *fixed* the said scrolling delays, of course.
This bug report was last modified 2 years and 8 days ago.

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